This study compares the performance of two smart isolation systems that utilize superelastic shape memory alloys (SMAs) for seismic protection of bridges using energy balance concepts. The first isolation system is a SMA/rubber-based isolation system (SRB-IS) and consists of a laminated rubber bearing that decouples the superstructure from the bridge piers and a SMA device that provides additio...

The load-bearing performance of a RC simply supported beam bridge was comprehensively detected and evaluated. appearance detection results show that there is large area damaged exposed reinforcement in the main girder diaphragm plate bridge. detecting material condition state parameters durability insufficient, risk steel corrosion large, strength concrete poor. load test bearing capacity does ...

As part of an effective bridge management system, sensor networks can provide data to support both inspection and assessment. Wireless sensor networks WSNs have the potential to offer significant advantages over traditional wired monitoring systems in terms of sensor, cabling, and installation costs as well as expandability. However, there are drawbacks with WSNs relating to power, data bandwid...

Here we will present measurement results for ac resistors calibrations, made with a four terminal-pair digital impedance bridge, developed at Inmetro. This bridge operates in a wide frequency and value ranges, for both in-phase and quadrature measurements, with uncertainties bearing some μΩ/Ω.

The paper describes the design of a four-terminal-pair impedance bridge developed at INMETRO. Originally devised to work as a quadrature bridge for deriving the unit of capacitance (Farad) from a resistance (Ohm) or vice-versa, it allows the comparison of impedances in general with outstanding accuracy and measurement uncertainties bearing some 10 /

Bridge bearing damage is unavoidable in railway engineering. This work presents an investigation on the model of bridge and its influence dynamic responses high-speed train-track-bridge system. Primarily, mathematical description explained detail, which then compared with traditional linear model. Then a 3D considering established based interaction theory. Adopting model, influences single-poin...

The aim of the study was to determine diaphragm performance and cross-bridge properties in rats bearing a growth hormone (GH)-secreting tumour. The tumour was induced by subcutaneous injection of GH-hypersecreting cells (GC cells) into the flank. Eighteen weeks after GC cell injection, rats developed a GH-secreting tumour (45.4+/-5.1 g) and the GH plasma level reached 5,408+/-648 microg x L(-1)...

a new design for replacing a missing anterior tooth is described. in this article, a lingually fixed partial denture, its advantages, disadvantages, indication and contraindications have been explained. the ability of this design to replace a single missing central or lateral incisor is discussed.